Emergence of elderly patients from anesthesia may face with cognitive dysfunction or agitation such as delirium. There are reports that using dexmedetomidine as a adjuvant for general anesthesia decreased emergence-agitation in children and dexmedetomidine may be used for treating deliriums. Thus, we thought that dexmedetomidine as a adjuvant agent may be a help to smooth emergence from anesthesia in elderly.